Matrices — Easy JEE math MCQ
If $A = \begin{pmatrix} 1 & 2 \\ 3 & 4 \end{pmatrix}$ and $B = \begin{pmatrix} 5 & 6 \\ 7 & 8 \end{pmatrix}$, then $A + B$ is:
- A. $\begin{pmatrix} 6 & 8 \\ 10 & 12 \end{pmatrix}$
- B. $\begin{pmatrix} 4 & 4 \\ 4 & 4 \end{pmatrix}$
- C. $\begin{pmatrix} 5 & 12 \\ 21 & 32 \end{pmatrix}$
- D. $\begin{pmatrix} 6 & 6 \\ 6 & 6 \end{pmatrix}$
Solution
$A + B = \begin{pmatrix} 1+5 & 2+6 \\ 3+7 & 4+8 \end{pmatrix} = \begin{pmatrix} 6 & 8 \\ 10 & 12 \end{pmatrix}$